SEAGATE TECHNOLOGY, INC. Technical Support Bulletin Board 408/438-8771 [300-9600 HST, MNP 3/5, N-8-1] (C)opyright 1990 ST-238R /Ä4Ä3Ä2Ä1Ä\ ³ O O O O ³ Power o o o o o o o o ÀÄÄÄÄÄÄÄÄÄÙ ÚData Cable o o o o o o o o ÚController Cable 1 5 G G 12 ÍÍÍÍÍÍÍÍÍ ÍÍ ³ ³ ³ ³ ³ ³ ³ ³ ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍ ÍÍÍÍÍÍÍÍÍÍÍÍ ³ ³ ³ ³ ³ ³ ³ ³ ÚÄÄÄÄÄÄÄÄÄÄÄÄ1 ³ ³ ³ ³ ³ ³ ³ ³ ÀÄTerminatorÄÙ ³ ³ ³ ³ ³ ³ ³ ³ Drive Select->1 2 3 4 ³ ³ ³ À Radial ³ ³ ³ ³ ³ ÀÄÄ Reserved ³ ÀÂÙ ³ ÀÄÄÄÄ Write Fault ³ ³ ÀÄÄÄÄÄÄ Factory Test ³ ÀÄÄÄÄÄÄÄÄÄ Never Used (Drive Select 3 and 4) À If twisted cable, use Drive Select 2 ST - 238R UNFORMATTED CAPACITY (MB) ________________38.4 FORMATTED CAPACITY (26 SECTORS) (MB) _____32.7 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________2,460 CYLINDERS ________________________________615 HEADS ____________________________________4 DISCS ____________________________________2 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________RLL TRANSFER RATE (mbits/sec) ________________7.5 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________588 BPI (BITS PER INCH) ______________________14,740 AVERAGE ACCESS (ms) ______________________65 SINGLE TRACK SEEK (ms) ___________________20 MTBF (power-on hours) ____________________100,000 POWER REQUIREMENTS: +12V START-UP (amps) _2.4 +12V TYPICAL (amps) __0.9 +5V TYPICAL (amps) ___0.8 TYPICAL (watts) ______14.8 MAXIMUM (watts) ______33 BUFFERED STEP PULSE RATE (micro sec) _____5-200 WRITE PRECOMP (cyl) ______________________N/A (616) REDUCED WRITE CURRENT (cyl) ______________N/A (616) LANDING ZONE (cyl)________________________670 IBM AT DRIVE TYPE ________________________* * MAY REQUIRE A CONTROLLER WITH BIOS SUPPORT, OR FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE. Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)